Note 8 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Effective Income Tax Rate Reconciliation, Percent	50.20%	30.50%	67.20%	39.30%
Other Tax Expense (Benefit)	$ (140,000)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount, Return to Provision Adjustment			$ (216,000)	$ (332,000)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount, Expiration of Statute of Limitations			70,000	(42,000)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount, Use of Tax Loss Carryforwards				$ (66,000)
Deferred Tax Assets, Valuation Allowance	$ 0		$ 0